Hydraulic oil cylinder guide sleeve buffering device

Abstract

The utility model provides a hydraulic oil cylinder guide sleeve buffering device, and relates to the technical field of hydraulic oil cylinders. A hydraulic oil cylinder guide sleeve buffering device comprises a cylinder barrel and a piston rod, one end in the cylinder barrel is fixedly connected with a guide sleeve, the piston rod slides in the guide sleeve, a sealing ring used for sealing a gap between the piston rod and the guide sleeve is installed in the guide sleeve, and one end of the piston rod is fixedly connected with a piston. According to the device, hydraulic oil is filled into a cylinder barrel to control a piston to slide in the cylinder barrel, when a piston rod stretches out towards a guide sleeve, a first magnet ring is extruded through one end of the piston, and a first piston plate is pushed to slide towards the interior of a first sliding groove under the connecting action of a connecting rod; the air in the first sliding groove is compressed through the first piston plate, the buffering effect is achieved, the risk of cylinder collision is reduced, good sealing of the sealing ring is guaranteed, and the phenomenon of oil leakage at the position of the guide sleeve is reduced.

Description

Technical Field

[0001] The utility model relates to a buffer device, in particular to a hydraulic oil cylinder guide sleeve buffer device, belonging to the technical field of hydraulic oil cylinders. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy, performing linear reciprocating motion (or oscillating motion). Its simple structure and reliable operation eliminate the need for a reduction gear when implementing reciprocating motion. Furthermore, it eliminates transmission backlash and provides smooth motion, making it widely used in hydraulic systems across various machines.

[0003] Chinese patent publication number CN201843850U discloses a hydraulic cylinder assembly, which includes a cylinder barrel and a guide sleeve, a piston and a piston rod accommodated in the cylinder barrel, wherein the guide sleeve is fixed to one end of the cylinder barrel, and a plurality of rubber sealing rings are provided between the guide sleeve and the contact surface of the cylinder barrel; a copper sleeve is further provided on the inner surface of the guide sleeve; the piston moves along the extension direction of the cylinder barrel; one end of the piston rod is connected to the piston and pushes the piston to move, and the piston rod passes through the guide sleeve, and the copper sleeve of the guide sleeve is arranged to abut against the piston rod.

[0004] However, the inventor of the above device believes that there are certain defects. The above hydraulic cylinder lacks a buffer mechanism when in use. During the movement of the piston, it will cause impact wear on the guide sleeve, which reduces the service life of the hydraulic cylinder. Therefore, the utility model provides a hydraulic cylinder guide sleeve buffer device. Utility Model Content

[0005] The purpose of the present invention is to provide a hydraulic cylinder guide sleeve buffer device in order to solve the above problems, so as to solve the problem in the prior art that the piston causes impact wear to the guide sleeve during movement, thereby reducing the service life of the hydraulic cylinder.

[0006] The utility model is realized through the following technical solutions: a hydraulic oil cylinder guide sleeve buffer device, including a cylinder and a piston rod, one end of the cylinder is fixedly connected to the guide sleeve, the piston rod slides inside the guide sleeve, a sealing ring for sealing the gap between the piston rod and the guide sleeve is installed inside the guide sleeve, one end of the piston rod is fixedly connected to the piston, the piston is slidably connected to the inside of the cylinder, and a buffering mechanism for buffering the piston is provided at the end of the guide sleeve close to the piston, the buffering mechanism includes a first magnet ring, a first slide groove is opened at one end of the guide sleeve, a first piston plate is slidably connected to the inside of the first slide groove, a connecting rod is fixedly connected to the first piston plate, and the first magnet ring is fixedly connected to one end of the connecting rod.

[0007] Preferably, a socket is provided on the inner bottom wall of the first slide groove, and a plug corresponding to the socket is fixedly connected to the bottom of the first piston plate. A rubber protrusion is fixedly connected to the plug. When the plug is inserted into the interior of the plug, the connecting rod is further buffered by the provided rubber protrusion and the socket.

[0008] Preferably, the end of the cylinder away from the guide sleeve is fixedly connected to a base, a second slide groove is provided on the top of the base, the bottom of the piston is fixedly connected to an insertion rod corresponding to the second slide groove, and the interior of the second slide groove is slidably connected to a second piston plate, and the second piston plate is pushed to slide toward the interior of the second slide groove by the insertion rod to compress the gas inside the second slide groove to buffer the insertion rod.

[0009] Preferably, a spring is installed inside the second chute, and the spring is fixedly connected to the bottom of the second piston plate. The spring is provided to cushion the insertion of the insertion rod into the second chute.

[0010] Preferably, the end of the piston close to the first magnet ring is fixedly connected to the second magnet ring, and the magnetic poles of the opposing surfaces of the first magnet ring and the second magnet ring are the same. When the piston slides toward the first magnet ring, the piston is further buffered by the first magnet ring and the second magnet ring.

[0011] Preferably, there are multiple connecting rods, which are arranged in a circular array partially around the piston rod, and the first magnet ring is supported in multiple directions by the multiple connecting rods.

[0012] Preferably, the outer surface of the cylinder is fixedly connected with a first oil port and a second oil port, and the first oil port and the second oil port are respectively located at the two ends of the outer surface of the cylinder. The hydraulic oil enters the interior of the cylinder through the first oil port or the second oil port to push the piston to slide inside the cylinder.

[0013] The utility model provides a hydraulic cylinder guide sleeve buffer device, which has the following beneficial effects:

[0014] The device controls the sliding of the piston inside the cylinder by filling hydraulic oil into the cylinder. When the piston rod extends toward the guide sleeve, one end of the piston squeezes the first magnet ring, and under the connecting action of the connecting rod, the first piston plate is pushed to slide toward the inside of the first slide groove. The first piston plate compresses the gas inside the first slide groove, which plays a buffering role, reduces the risk of hitting the cylinder, ensures good sealing of the sealing ring, and reduces oil leakage at the guide sleeve.

[0015] The device uses the first and second magnet rings to further buffer the energy of the piston impact according to the principle of like poles repelling each other when the piston slides toward the guide sleeve, and buffers one end of the piston rod when it contracts through the action of the provided insert rod, second slide groove, second piston plate and spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a cutaway perspective view of the cylinder of the present invention;

[0017] Figure 2 It is a structural diagram of the utility model;

[0018] Figure 3 This is a three-dimensional diagram of the guide sleeve of the present utility model;

[0019] Figure 4 This is a schematic diagram of the first chute structure of the present utility model.

[0020]

Main component symbol description

[0021] 1. Cylinder barrel; 11. First oil port; 12. Second oil port; 2. Piston rod; 3. Piston; 4. Guide sleeve; 41. First slide groove; 42. First piston plate; 43. Connecting rod; 44. Socket; 45. Plug; 46. Rubber protrusion; 5. First magnet ring; 6. Second magnet ring; 7. Insert rod; 8. Base; 81. Second slide groove; 82. Second piston plate; 83. Spring. DETAILED DESCRIPTION

[0022] The embodiment of the utility model provides a hydraulic oil cylinder guide sleeve buffer device.

[0023] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , a hydraulic cylinder guide sleeve buffer device includes a cylinder 1 and a piston rod 2. One end of the cylinder 1 is fixedly connected to a guide sleeve 4, and the piston rod 2 slides inside the guide sleeve 4. A sealing ring is installed inside the guide sleeve 4 to seal the gap between the piston rod 2 and the guide sleeve 4. The guide sleeve 4 is provided to guide the movement trajectory of the piston rod 2 and seal the gap between the guide sleeve 4 and the piston rod 2 under the action of the sealing ring. One end of the piston rod 2 is fixedly connected to a piston 3, and the piston 3 is slidably connected to the inside of the cylinder 1. The outer surface of the cylinder 1 is fixedly connected with a first oil port 11 and a second oil port 12. The first oil port 11 and the second oil port 12 are respectively partially at the two ends of the outer surface of the cylinder 1. Hydraulic oil is injected into the interior of the cylinder 1 through the first oil port 11 and the second oil port 12. Under the action of oil pressure, the piston 3 is pushed to slide inside the cylinder 1, thereby driving the piston rod 2 to extend or retract.

[0024] Please refer again Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The guide sleeve 4 is provided with a buffering mechanism for buffering the piston 3 at one end near the piston 3, and the buffering mechanism includes a first magnet ring 5, and a first slide groove 41 is opened at one end of the guide sleeve 4. The first slide groove 41 is slidingly connected to the first piston plate 42 inside the first slide groove 41, and the first piston plate 42 is fixedly connected to the first piston plate 42. The first magnet ring 5 is fixedly connected to one end of the connecting rod 43, and the number of connecting rods 43 is multiple, and the multiple connecting rods 43 are partially around the piston rod 2 in a circular array. When the piston rod 2 extends outward, the piston 3 slides close to the guide sleeve 4, and the first magnet ring 5 is squeezed by one end of the piston 3. Under the connection action of the connecting rod 43, the first piston plate 42 is pushed to slide towards the inside of the first slide groove 41, and the air inside the first slide groove 41 is compressed by the first piston plate 42 to buffer the impact of the piston 3, thereby reducing the risk of the piston 3 hitting the cylinder.

[0025] Please refer again Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The inner bottom wall of the first slide groove 41 is provided with a socket 44, and the bottom of the first piston plate 42 is fixedly connected to a plug 45 corresponding to the socket 44, and a rubber protrusion 46 is fixedly connected to the plug 45. When the first piston plate 42 slides toward the inside of the first slide groove 41, the plug 45 is inserted into the inside of the socket 44. The maximum diameter of the rubber protrusion 46 is greater than the aperture value of the socket 44, and the rubber protrusion 46 is squeezed through the socket 44, thereby buffering the impact of one end of the first magnet ring 5. The end of the piston 3 close to the first magnet ring 5 is fixedly connected to the second magnet ring 6. The magnetic poles of the opposite surfaces of the first magnet ring 5 and the second magnet ring 6 are the same. According to the principle of like poles repelling, the piston 3 is further buffered when it approaches the guide sleeve 4.

[0026] Please refer again Figure 1 and Figure 2 The end of the cylinder 1 away from the guide sleeve 4 is fixedly connected to the base 8, and a second slide groove 81 is provided on the top of the base 8. The bottom of the piston 3 is fixedly connected to the insertion rod 7 corresponding to the second slide groove 81, and the second piston plate 82 is slidably connected inside the second slide groove 81. When the piston rod 2 contracts into the inside of the cylinder 1, the piston 3 slides closer to the base 8, and the insertion rod 7 is inserted into the second slide groove 81 to push the second piston plate 82 to slide inside the second slide groove 81. The air in the second slide groove 81 is compressed by the second piston plate 82 to buffer the other end of the cylinder 1. A spring 83 is installed inside the second slide groove 81, and the spring 83 is fixedly connected to the bottom of the second piston plate 82. Under the action of the elastic force of the spring 83, the buffering effect on the other end of the cylinder 1 is improved.

[0027] Working principle: Connect the device to the hydraulic system, introduce hydraulic oil into the interior of the cylinder 1 through the first oil port 11 and the second oil port 12, and push the piston 3 to slide inside the cylinder 1 under the action of oil pressure. When the piston rod 2 extends outward, the piston 3 slides toward the guide sleeve 4. The first magnet ring 5 and the second magnet ring 6 are arranged in a phase according to the principle of like poles repelling each other to slow down the impact of the piston 3 approaching the guide sleeve 4. When the piston 3 impacts the first magnet ring 5 and squeezes the first piston plate 42 at one end of the connecting rod 43 to slide toward the inside of the first slide groove 41, the internal air of the first slide groove 41 is squeezed by the first piston plate 42. The air is buffered again, so that the plug 45 is inserted into the inside of the jack 44. The maximum diameter of the rubber protrusion 46 is larger than the aperture value of the jack 44. The rubber protrusion 46 is squeezed through the jack 44 to buffer the impact of one end of the first magnet ring 5 again. When the piston rod 2 contracts, the piston 3 slides toward the base 8, and one end of the insertion rod 7 is inserted into the inside of the second slide groove 81 to push the second piston plate 82 to slide inside the second slide groove 81, so that the second piston plate 82 squeezes the internal air of the second slide groove 81 for buffering, and buffers again under the action of the elastic force of the spring 83, reducing the risk of hitting the cylinder.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder guide sleeve buffer device, comprising a cylinder barrel (1) and a piston rod (2), characterized in that: One end of the cylinder (1) is fixedly connected to a guide sleeve (4), the piston rod (2) slides inside the guide sleeve (4), and a sealing ring for sealing the gap between the piston rod (2) and the guide sleeve (4) is installed inside the guide sleeve (4). One end of the piston rod (2) is fixedly connected to a piston (3), and the piston (3) is slidably connected to the inside of the cylinder (1). The end of the guide sleeve (4) close to the piston (3) is provided with a buffer mechanism for buffering the piston (3), and the buffer mechanism includes a first magnet ring (5), one end of the guide sleeve (4) is provided with a first slide groove (41), the interior of the first slide groove (41) is slidably connected to a first piston plate (42), the first piston plate (42) is fixedly connected to a connecting rod (43), and the first magnet ring (5) is fixedly connected to one end of the connecting rod (43).

2. The hydraulic cylinder guide sleeve buffer device according to claim 1, characterized in that: The inner bottom wall of the first chute (41) is provided with a socket (44), and the bottom of the first piston plate (42) is fixedly connected to a plug (45) corresponding to the socket (44), and a rubber protrusion (46) is fixedly connected to the plug (45).

3. The hydraulic cylinder guide sleeve buffer device according to claim 1, characterized in that: The end of the cylinder (1) away from the guide sleeve (4) is fixedly connected to a base (8), a second slide groove (81) is provided on the top of the base (8), an insertion rod (7) corresponding to the second slide groove (81) is fixedly connected to the bottom of the piston (3), and a second piston plate (82) is slidably connected inside the second slide groove (81).

4. The hydraulic cylinder guide sleeve buffer device according to claim 3, characterized in that: A spring (83) is installed inside the second sliding groove (81), and the spring (83) is fixedly connected to the bottom of the second piston plate (82).

5. The hydraulic cylinder guide sleeve buffer device according to claim 1, characterized in that: One end of the piston (3) close to the first magnet ring (5) is fixedly connected to the second magnet ring (6), and the magnetic poles of the opposing surfaces of the first magnet ring (5) and the second magnet ring (6) are the same.

6. The hydraulic cylinder guide sleeve buffer device according to claim 1, characterized in that: There are multiple connecting rods (43), and the multiple connecting rods (43) are arranged in a circular array partially around the piston rod (2).

7. The hydraulic cylinder guide sleeve buffer device according to claim 1, characterized in that: The outer surface of the cylinder barrel (1) is fixedly connected with a first oil port (11) and a second oil port (12), and the first oil port (11) and the second oil port (12) are respectively partially located at two ends of the outer surface of the cylinder barrel (1).

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